Value for Colt Python and diamondback

[gunner336]

Planning on selling a Colt Python 6" brite Nickel no box or papers. Made in 76-77. 99% No cylnder burn.

Also a Colt DiamondBack 6" .22 Blue . 98+%. slight cylnder turn mark. No box

What is the current fair asking price for these.

[Knifemaker]

I would start with Blue book, but you have to look at other markets too. Not just what they are listed for but what they are selling for. Try a completed auction search on Gunbroker. I recently sold a Diamondback .22 with a four inch barrel same cond as yours for $650.
Matt